Re: [CAD_CAM_EDM_DRO] Was: Linear rail, accuracy in general

> On large workpieces, and large machines where the point where the nut

drives

> the axis is far from the actual location of the part, these expansions

reach

> levels of hundredths or even tenths of inches very easily. Workpiece
> heating and tool and spindle expansion is even more a problem that
> table and leadscrew heating, so these are the first places to look for

trouble.

Why aren't the machines put into some sort of water tight bath and just
submerged in coolant while they're working? The rapids and high speed
cutting wouldn't be as fast but the surrounding coolant would suck up heat
much faster than air can. It could also be pumped through and kept at a much
more constant temperature than air (A high latent heat capacity I think
that's called).

Does coolant, being a high percentage of water, not rust machinery because
the parts it contacts are usually stainless or chromed? The tooling business
with the machines if real cleaver, I like it very much so! : )

John H.